package net.zjitc.filter;

import net.zjitc.pojo.AdminUser;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;

/**
 * Created by Administrator on 2017/11/18.
 */

public class MyFilter implements Filter {
    public void destroy() {
    }

    public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain) throws ServletException, IOException {
        //定期清空缓存clean
        HttpServletRequest request= (HttpServletRequest) req;
        HttpServletResponse response= (HttpServletResponse) resp;
        HttpSession session=request.getSession();
        AdminUser user= (AdminUser) session.getAttribute("admin");
        if (user==null){
            response.sendRedirect("/shopping/admin/login.jsp");
        }else {
            chain.doFilter(req, resp);
        }

    }

    public void init(FilterConfig config) throws ServletException {

    }

}
